I have a standard 90 gallon(18x24x48). I currently have a 6060 and a maxi 1200 mod. I want to ditch both of these and go with something controlable. I was thinking two 6000 and a multi controler, or a wavebox. What do you think would be best for a mostly SPS dominated tank? Thanks!! Also, does the wavebox negatively affect a corner overflow? How much space is needed between the top of the aquarium and the water level.